Abstract: A suspen-dome includes a single-layer dome and a bottom tensegrity system. To further understand the structural mechanical properties and construction process, a 8∶122 reduced scale suspen-dome model according to the actual structure with 122m span was made. During making the model, a similar ratio of each parameter was firstly determined in according to the similar principle, Then, the upper single-layer dome, the bottom tensegrity system and nodes were designed and made, at the same time the stress and displacement measuring points were arranged according to experimental contents and model characteristics. Last, a full span load and a half span load were loaded on model, a 80kg load was loaded on each model node by 5 times during experiment. Results shows that the theoretic and experimental data are basely available. Error is larger in measuring point whose measured value is relatively small and whose anti-interference ability is weak . Internal forces and displacements are basicly linear during a loading and unloading process. What the paper studied can be referenced for other structural design.